Anyone know? I don't want to have to get a bigger car for when #3 is born, but if it isn't safe to fit 3 in the back of our Corolla (booster for almost 7YO, FF 4YO, and RF newborn) then we'll go ahead and get a van. But we really want to make our current car situation work if at all safe.

Thank you! That is all very helpful. We know we needed to buy a new booster for my oldest, and the Radian he's in will go down to my middle child, and I'll see if one of our current seats fits for the newborn. Otherwise, a newborn seat and a booster are definitely cheaper than another vehicle ... which we plan on getting in another year or so, but we'd like more time to save cash for it.

We have a MyRide65 that has a narrow base, but I don't know if the upper part will be too wide to fit. We'll try it out before buying a new one. From what I've read a coccoro might be one we get if we need to buy a new one. DH is more than thrilled that we won't have to buy a new car (yet!).